Transform `#imports` to improve tree-shaking

Editor assessment

This is what an excellent perf entry looks like. `perf(nuxt)` is the honest type, and the subject pairs the mechanism with the goal — transforming `#imports` to improve tree-shaking — so readers immediately understand both what changed and what benefit to expect, in proper imperative form at a comfortable length. It is exactly the kind of line that makes an automated changelog genuinely informative for upgrade decisions. The backticked alias keeps it searchable. The only possible addition is quantification in a body (bundle-size deltas, affected builds), but the header is so well-constructed that the message stands complete without it. No structural, stylistic, or semantic criticisms available.